Which of the following system-provided framework classes of Symbian OS GUI is used to handle the control stack for first-level key event distribution?

Which is/are (an) advantage(s) of lodger controls?

In Symbian C++, the basic class for color is the Trgb: color specification. What is the size of the TRgb: class object?

Which APIs will be used to enable or disable 'Show call duration'?

Which one is NOT a valid integer data type in Symbian OS programming?

For S60 devices, what is the minimum size that an element should have, in order to be considered as index finger usable?

Every file present in the hierarchy of the Symbian platform is owned by one and only one component, collection, package and layer.

Can a file within a package contain hardcoded references to the package directory location in Symbian?

Which layers is/are present in the Symbian System Model?

Consider the following lines of code. What does it signify if aForeground is set to FALSE?
void CMyViewAppUi::HandleForegroundEventL(TBool aForeground)
    {
    if (aForeground==TRUE)
        {
        iEikonEnv->InfoMsg(_L('Some Message here'));
        }
    else
        {
        iEikonEnv->InfoMsg(_L('Some Message here'));
        }
    }

Which server is a serial communications server that drives the communications ports and also runs serial-like protocols that use other communications services?